Hi, I am doing a research on these dogs but I keep finding lots of contradicting opinions and information...
Maybe there are some northern inuit owners here who could help me out? I also have two questions. I heard that northern inuits aren't really protective - for example if burglar or murderer brakes into the house, they will greet him as if he was a friend. Is it true? I also wonder, whether  northern inuits can get used to cats, or is the 'prey drive' too strong in them?
I would be grateful for information.

This http://en.wikipedia.org/wiki/Northern_Inuit_Dog gives a fairly good overview, though it is a little misleading giving the impression that the Kennel club somehow gives tacit approval to them being a breed when in fact any crossbreed can be registered for same of the performance events like Obedience, Agility etc.

As they are a crossbreed or more accurately mongrel there is no discernible "type" they may be calm or hyper, safe with cat or not safe, fit or unhealthy you have to pay your money and take the chance, there are some nice natured dogs bearing this description and there are some very iffy ones, there are some healthy ones and some very unhealthy.  As with most of the designer type dogs that are produced the backgrounds are not known and it is unlikely that the best of dogs have been used to produce these dogs, people who own quality pedigree dogs do not use them to produce crossbreeds or designer dogs.

The fact that you keep finding conflicting information speaks volumes about this type. Breeders can't even agree on the origins of the breed. Understandable in breeds which have been around for hundreds of years but cause for concern for a 'breed' (for want of a better word) that has only been around for 20 odd years or so.

This type of dog has been developed to be a dog in wolves clothing, many different people claim to have founded the 'breed' (I use that term very loosely) but as with many things several people began breeding at similar times and have had similar results.
The important thing to remember if you have your heart set on one of these dogs is to do your research and meet the breeder and BOTH parents of the pups you are interested in.
By research I mean, good breeders of this type of dog keep 'pedigrees' of their dogs, research the pedigrees, they will list all the dogs that have made this particular Northern Inuit. Check out the amount of German Shepard, Belgian Shepard, Siberian Husky, Alaskan Malamute etc etc in the background, I'd advice you to check out each of individual dog breed traits and then you may understand why some lines may be more prone to guarding than others.
Good breeders have also started Hip Scoring under the Activity register with the KC so they are trying to make the 'breed' healthy and free from any problems associated with the breeds that make up the Northern Inuit.

Meeting the pups parents and any other relative will give you a good idea of what your prospective pup will turn out like.
Again regard the pedigree if any of the breeds used to make up the Northern Inuit were KC registered you can do background checks for health and find out about where they came from and if there is any associated behavioral problems with that line.
Be wary of Back Yard Breeders trying to make a quick pound by breeding their unregistered Siberian Husky, they will most likely do no health tests and may cross it to anything including poor health or poor temperament uncertain crosses.

Thank you for replies everyone, I really appreciate it!

Check out the amount of German Shepard, Belgian Shepard, Siberian Husky, Alaskan Malamute etc etc in the background, I'd advice you to check out each of individual dog breed traits and then you may understand why some lines may be more prone to guarding than others.

And again the fact you HAVE these dogs behind them speaks volumes, as many of us BSD breeders (i.e. those of us active in the show world, breed club members etc) have been approached asking for our dogs to be used at stud with such crossbreed bitches and we have all refused. Only leaves owners after nothing but a quick buck that would have allowed such matings -most likely from endorsed, non hip scored and non eye tested Belgians.

BSD is not a breed I've heard mentioned before in connection with these types of dogs

Most look like poor GSDs crossed with a spitz breed, the biggest health problem will no doubt be epilepsy because it is not easy to test for and is prevalent in poor bred GSDs although they may only be carriers, I do, in fact, know of at least a dozen who are suffering with this to say nothing of any number of the other problems suffered by GSDs and other breeds used to produce this type of cross breed, this includes joint problems, back problems, eye problems and bleeding conditions.

And of course epilepsy can't be tested for....

I do not endorse or encourage these dogs but because I have the breed that I do I too have been approached, I refused, I know many a person even after discouragement that have gone on and simply crossed their unregistered husky to someones unregistered GSD. Someone who lives in our street had a 'Northern Inuit' but when they were questioned further it was simply a Siberian x GSD and it did have epilepsy and the poor dog because we live near the coast it was let out and had a fit and fell off the cliff, washed ashore up the coast line the next day dead. Just wanted to shame knowledge with OP, One of my old girls looks like a small sized wolf so people think that she must be one, the amount of times she has nearly been stolen because of it, some of these crosses could have come from a similar dog-napping, the mind boggles really when you think about it.

I've heard of Groenendael, Tervuren and even Malinois although I haven't come across any Laekenois in one of these so called 'pedigrees' Just to be more specific on the Belgian Shepherds I was talking about.
Years ago I heard of a Chinook being used in one line, for generations afterwards pups would end up with floppy lugs not the desired effect. Chinooks themselves being an original cross between husky and mastiff for freight pulling.

The BYB doing this as a quick money making scheme are putting dogs lives at risk and the heartache that potential owners will suffer when they get a pup that has inherited the bad points of each breed including all the bad health problems.

I do however encourage the understanding of the Inuit dog/Inuit Sled Dog as these are a rare pure bred sledding breed that have remained with their native people and are now endangered, not to be confused with the Northern Inuit or Tamaskan or Utanagan or other such name made up for those crosses. :o)

I understand that two Northern Inuit dogs scored 0-0 on their hips and elbows which I thought was outstanding. 

As for the Wikipedia reference it appears to be out of date. 

NI were also used in the series Game of Thrones so it would appear that they are trainable; and are not aggressive so would not make good guard dogs; they do, I was told suffer from SA which quite a lot of breeds suffer from (my boxers included) :)

They are not pedigree in KC terms but the Northern Inuit Society appear to be doing a lot of work with them to get them recognised...

They were at Bakewell Dogs Unleashed Show last weekend and to be honest I was extremely impressed with the breed and the society who monitors them.  Yes you are going to get rogue breeders but you get them with every breed - the Boxer Rescue Stand had some terrible photos of neglected Boxers which bought tears to my eyes....

My own Spitz breed has also had 0/0 hip scores (as have most breeds), but we have also had ones as high as 61 (mean 13).

Just looked at tjhe mean scores litst: 

Inuit: range 4 - 89 (163 animals) mean 16.
Untonogan: range 0 - 106 (80 animals) mean 20.
Tamaskan: range 0 - 56 (23 animals) mean 11.

These figures are no better and often far worse than most Spitz breeds, in fact probably more in line with the worst Hip scoring element of the crosses the GSD. which has a range of 0 - 106, mean 19.

Siberian Huskies: range 0 - 47, mean 7, Malamute: range 0 - 69, mean 13, Tervuern: 0 - 93, mean 10.

Strange Brainless if the two dogs Boxing Phoebe knows of have a 0-0 score that the BVA lists show a scale from 4 to 89 for the NI - something wrong somewhere as the lowest score according to the BVA would be 2-2 or 1-3 or even 0-4 but not 0-0